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3 years ago

. "A number is less than or equal to -11.".

Mathematics

2 answers:

ValentinkaMS [17]3 years ago

8 0

Answer:

x <(with a line underneath the carrot) -11

Step-by-step explanation:

Hope this helps! Could not find the symbol.

just olya [345]3 years ago

3 0

Answer:

the answer is x ≤ -11

Step-by-step explanation:

hope that helps

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_______ was the most important contribution of the Shang Dynasty.

Pavlova-9 [17]

The Shang Dynasty had several contributions to history. One of the most important and notable contribution was writing.

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3 years ago

The speed of the current in a river is 6 mph. A ferry operator who works that part of the river is looking to

Morgarella [4.7K]

Answer:

9 mph

Step-by-step explanation:

Let he speed of the boat on the lake is x.

<u>Considering the speed of the current it will take him:</u>

22.5/(x + 6) + 22.5/(x - 6) = 9
2.5 / (x + 6) + 2.5 / (x - 6) = 1
2.5(x - 6 + x + 6) = (x + 6)(x - 6)
2.5*2x = x² - 36
x² - 5x - 36 = 0
x = (5 ± √(5² + 4*36))/2 = (5 ± 13) / 2
x = (5 + 13)/2 = 9 mph (negative root is discarded as the speed should be positive)

7 0

2 years ago

1 point

Mariana [72]

Answer:

Step-by-step explanation:

Angle 7 & angle 8 are supplementary angles, meaning they add up to 180º.

Angle 8 & angle 12 are corresponding angles, so they are equal.

If we solve for the measure of angle 8, it will be the same answer as angle 12.

Therefore, angle 7 & angle 12 add up to 180º.

80 + (x+17) = 180

Solve:

(80-80) + (x+17) = 180-80

X+17 = 100

X + (17-17) = 100-17

X = 83

4 0

4 years ago

Read 2 more answers

If you could help I would really appreciate it, but if not that’s fine. Thank you.

Gre4nikov [31]

Since -1 is less than or equal to -1 you input it into the first equation.

-3•(-1) -4
3-4
-1

the answer is -1 good luck

7 0

3 years ago

What is the following simplified product? Assume x 0.<br> (sqrt6x^2+4sqrt8x^3)(sqrt9x-xsqrt5x^5)

e-lub [12.9K]

Answer:

Step-by-step explanation:

Keep in mind, whatever is inside of the square root, stays inside of the square root, and whatever is outside, stays outside, they don't multiply together. With parenthesis, exponents multiply, if there's no parenthesis, the exponents don't multiply. In this case, the exponents add.

Multiply each one together:

sqrt(6x^2) x sqrt(9x) = sqrt(54x^3)

sqrt(6x^2) x -(x sqrt(5x^5)) = -x sqrt(30x^7)

4 sqrt(8x^3) x sqrt(9x) = 4 sqrt(72x^4)

4 sqrt(8x^3) x -(x sqrt(5x^5)) = -4x sqrt(40x^8)

Then simplify:

sqrt(54x^2) = 3x sqrt(6x)

x sqrt(30x^7) = -x^4 sqrt(30x)

4 sqrt(72x^4) = 24x^2 sqrt(2)

-4x sqrt(40x^8) = -8x^5 sqrt(10)

5 0

3 years ago